Added support of MetaSerializable to the FIR

plugins/kotlinx-serialization/kotlinx-serialization.backend/src/org/jetbrains/kotlinx/serialization/compiler/backend/ir/IrBuilderWithPluginContext.kt

@@ -367,20 +367,7 @@ interface IrBuilderWithPluginContext {
             val annotationClass = annotationCall.symbol.owner.parentAsClass
             if (!annotationClass.isSerialInfoAnnotation) return@mapNotNull null
 
-            if (compilerContext.platform.isJvm()) {
-                val implClass = compilerContext.serialInfoImplJvmIrGenerator.getImplClass(annotationClass)
-                val ctor = implClass.constructors.singleOrNull { it.valueParameters.size == annotationCall.valueArgumentsCount }
-                    ?: error("No constructor args found for SerialInfo annotation Impl class: ${implClass.render()}")
-                irCall(ctor).apply {
-                    for (i in 0 until annotationCall.valueArgumentsCount) {
-                        val argument = annotationCall.getValueArgument(i)
-                            ?: annotationClass.primaryConstructor!!.valueParameters[i].defaultValue?.expression
-                        putValueArgument(i, argument!!.deepCopyWithVariables())
-                    }
-                }
-            } else {
-                annotationCall.deepCopyWithVariables()
-            }
+            annotationCall.deepCopyWithVariables()
         }
 
     @OptIn(ObsoleteDescriptorBasedAPI::class)
@@ -400,4 +387,4 @@ interface IrBuilderWithPluginContext {
     }
 
     fun IrClass.getSuperClassOrAny(): IrClass = getSuperClassNotAny() ?: compilerContext.irBuiltIns.anyClass.owner
-}
+}